Once the appropriate solar panels have been selected, it is time for the installation phase. Care must be taken as optimizing the angle and direction of installation will maximize our photovoltaic energy production.
The first thing we need to do is to determine the solar radiation level in our area, we need to use the meteorological data of our location, the average daily radiation level of the previous month and adjust the light intensity of the solar panels according to the lowest and highest solar radiation levels, so that we can make the solar panels use solar energy more effectively.
One issue that cannot be ignored is that the time of peak solar radiation varies in different seasons and time zones.
Therefore, we should pay attention to adjusting the installation angles in different seasons, because the angle of sunlight fall is different in hot summer and cold winter.
At the same time, it is necessary to avoid tall buildings as much as possible when installing solar panels to ensure a more efficient use of space and avoid blocking the injection process of sunlight.
Finally, let’s choose the appropriate installation direction and angle:
Installation direction: When direct sunlight is incident on the solar panel, the maximum solar energy absorption per unit area of the solar panel is located in the north-facing south direction in the northern hemisphere and in the south-facing north direction in the southern hemisphere.
Installation angle: The tilt angle of the solar panel is determined to allow it to absorb as much solar energy as possible, and the magnitude of the tilt angle is related to your latitude.
The Earth’s axis of rotation is not perpendicular to its orbit, so the sun angle varies with the seasons, with a difference of ± 23.4 degrees. The median angle of the sun occurs at the spring and autumnal equinoxes, and at noon on the equinox the sun angle is exactly equal to (90 degrees minus latitude).
By a thorough calculation, the optimal angle of inclination should be slightly greater than its latitude in order to reach the maximum value received over the course of a year.